Can you script it to so a PDF will post itself back to the server after it is digitally signed with a certificate. If there is no event for once signed could the digitally signed PDF be posted back by a submit button.

Two goals, make it easier for the user to hand back the signed PDF and ideally make it so they can download the PDF and load it in their browser and sign and return it there.

In the "Signed" tab of the signature properties, you can add a script that executes when the field is signed. The following JavaScript will submit the entire PDF. The "url" should be set to a server script that will "catch" the PDF so you can save it off somewhere.

this.submitForm({

cURL: url,

cSubmitAs: "PDF"

});

The PDF gets submitted as an HTTP POST where the PDF is a string forming the body. If you're using PHP, thre following line will give you the PDF.